Oil burner



L. F. SMITH Jul 29 1924.

OIL BURNER Filed Dec 30, 1922 2 Sheets$heet 1 2 Sheets-She 2 I July 29 1924.

L. F. SMITH OIL BURNER Filed Dec. 30, 192-2 Patented July 29, 1924.

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LOUIE F. SMITH, OF SOUTH HOUSTON, TEXAS, ASSIGNOR OF ONE-HALF '"I'O GEORGE I). COLLINS, OF HOUSTON, TEXAS, AND THREE EIGHTHSTO JAMES Ail-IENSON, AND ONE-EIGHTH TO MYRON COLLINS, BOTH OF HARRIS COUNTY, TEXAS.

OIL BURNER.

Application filed December 30, 1922. Serial No. 609,969.

To all whom it may concern:

Be it known that I, LOUIE F. SMITH, citi zen of the United States, residing at South Houston in the county of Harris and State of Texas, have invented certain new and useful Improvements in Oil Burners, of which the following is a specification.

This invention relates to new and useful improvements in an oil burner.

One object of the invention is to provide a burner specially designed for the utilization of hydrocarbon as a fuel, and whereby said fuel will be thoroughly vaporized and projected into the combustion chamber in such form that it will be completely consumed, thus avoiding fuel waste.

A further feature of the invention resides in the provision of a burner equipped with means for automatically controlling the.

feed of the fuel.

With the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein Figure 1 is a plan. view of the burner partly in section.

Figure 2 is a side view.

Figure 3 is a transverse sectional view, taken on the line 33 of Figure 4.

Figure 4 is a longitudinal sectional view taken on the line 44 of Figure 3.

Figure 5 is a longitudinal sectional view taken on the line 55 of Figure 3 and,

Figure 6 is an end view of the burner.

In the drawings, the numeral. 1 designates the body of the burner which, in the preferred form, consists of a metallic block. Threaded into the front end. of this block is the discharge nozzle 2 having the central discharge opening 3, and within this dis charge nozzle and spaced therefrom there is the blast nozzle 4 which is anchored in the block by threading or otherwise securing the same therein. Aligned with these nozzles there is a bore in the other side of said block, forming a chamber 5, and threaded into the outer end of this bore and enclosing said chamber there is a stuffing box 6 through which the valve stem 7 works the inner end of said stem terminating in a needle valve 8 which is aligned with and controls the blast nozzle. The numeral 9 designates a steam or air pipe which is threaded into the bore 10 of said block. Said bore is connected with the chamber :5 by a fluid conduit 11. Steam or air is admitted under pressure through the pipe 9 and it passes through said conduit into the chamber 10, and thence out through the nozzle 4. The numeral 12 designates a fuel pipe which enters the bore 13. The numeral 14 designates a fuel chamber in the block which is enclosed by a stufling box 15 which is screwed therein and through which operates the valve stem 16 which terminates in the needle valve 17. The fuel chamber 14 is connected with the fuel pipe through a connecting conduit 18. Leading from the chamber 14 there is a fuel passageway 19 which enters the discharge nozzle 2, and this passageway is controlled by the needle valve 17. Fuel is admitted under pressure and surrounds the blast nozzle 4 and is discharged out through the discharge nozzle 2, by air or steam pressure from theblast nozzle 4 and is thereby thoroughly vaporized, and discharged into the combustion chamber thoroughly vaporized and in combustible form. The flow of steam and fuel are controlled by the needle. valves8 and 17 respectively. The stems of these valves are fastened to a yoke 19 and are independently adjustable on said yoke. The numeral 20designates a supporting member, preferably a rod or bar, as shown. The block 1 is fixed to one end of this rod and to the other end thereof there is fastened a casing 21 having the internal chamber 22 spanning which there is a flexible diaphragm 23. A pressure line 24 enters said chamber on one side of said diaphragm and operating against the other side of said diaphragin there is a coil spring 25 which is enclosed within the casing sleeve 26. There is an adjusting nut threaded into the outer end of said sleeve against which said spring rests and through which its tension may be varied. An actuating rod 28 is fastened at one end to said yoke and it works through the central bearing of said nut 27 and its other end is fastened to said diaphragm.

Normally the pressure of the spring 25 will hold the needle valves 8 and 17 open, that is in position to freely admit steam or air and fuel. As the steam pressure increases the pressure will be admitted through the line 24 into the chamber 22 and will set against the diaphragm 23 to gradually close said valves 8 and 17 so that the fuel supply will be gradually reduced and the reduction of the fuel supply will operate to reduce the steam pressure so that the supply of fuel to the combustion chamber is automatically controlled. In order to prevent the supply of fuel from being entirely out ofl the yoke 19 is provided with an adjusting screw 29 adapted to abut against the stop 30 carried by the rod 20. The screw 29 may be adjusted so as to vary the range of movement of the valves.

What I claim is:

1. An oil burner including a discharge nozzle through which fuel is discharged into a combustion chamber a blast nozzle within said discharge nozzle and spacedtherefrom forming a chamber around said blast nozzle; fuel and steam lines entering said respective nozzles, and through which fuel and steam under pressure are supplied thereto; valve seats in said respective lines; valves arranged to cooperate with said seats, and controlling the passage of fuel and steam, respectively, therethrough; a member connecting said valves rigidly together; an actuating rod fastened to said connecting member,.a casing having an internal chamber; a flexible diaphragm spanning said chamber and fastened tosaid actuating rod; a yieldable member on one side of said diaphragm, and arranged to operate against said actuating rod to normally hold said valves open; and a fluid pressure line enter-- ing said chamber on the other side of said diaphragm.

2. An oil burner including a discharge nozzle through which fuel is discharged into a combustion chamber; a blast nozzle within the; discharge nozzle and spaced therefrom forming a chamber; a fuel and fluid pressure lines entering said respective nozzle through which fuel and fluid under pressure, are supplied to said nozzles; valve seats in said lines through which said fuel and pressure fluid pass; valves arranged to cooperate with said seats; a yoke to which the valves are rigidly secured; an actuating rod attached to said yoke at one end; acasing having an internal chamber; a flexible diaphragm spanning said chamber, and to which the other end of the actuating rod is attached; a coil spring 011 one side of said diaphragm, normally operating against said rod to hold said valve open; a fluid pressure line entering said chamber on the other side of said diaphragm.

3. An oil burner including a discharge nozzle through which fuel is discharged into a combustion chamber; a blast nozzle within the discharge nozzle and spaced therefrom, forming a chamber; a fuel and fluid pressure lines entering said respective nozzle through which fuel and fluid, under pressure, aresupplied to said nozzles; valve seats in said lines through which said fuel and pressure fluid pass; valves arranged to cooperate with said seats; a yoke to which the valves are rigidly secured; an actuating rod attached to said yoke at one end; a casing having an internal chamber; a flexible diaphragm spanning said chamber, and to which the other end of the actuating rod is attached; a coil spring on one side of said diaphragm, normally operating against said rod to hold said valves open; a fluid presure line entering said chamber on the other side. of said diaphragm, through which fluid pressure may be admitted into the chamber to operate against said diaphragm, to actuate the valves toward closed position; and an adjustable stop limiting the movement of said valves toward closed position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. v

LOUIE F. SMITH.

Witnesses E. V. HARDWAY, L. M. HOOK. 

